.global _start

_start:
    ldr r0, =0X020C4068 /* 寄存器 CCGR0 */
    ldr r1, =0XFFFFFFFF
    str r1, [r0]

    ldr r0, =0X020C406C /* 寄存器 CCGR1 */
    str r1, [r0]
    ldr r0, =0X020C4070 /* 寄存器 CCGR2 */
    str r1, [r0]
    ldr r0, =0X020C4074 /* 寄存器 CCGR3 */
    str r1, [r0]
    ldr r0, =0X020C4078 /* 寄存器 CCGR4 */
    str r1, [r0]
    ldr r0, =0X020C407C /* 寄存器 CCGR5 */
    str r1, [r0]
    ldr r0, =0X020C4080 /* 寄存器 CCGR6 */
    str r1, [r0]

    ldr r0, =0x020E0068 //MUX
    ldr r1, =0x00000005
    str r1, [r0]

    ldr r0, =0x020E02F4 //PAD
    ldr r1, =0x000010b0
    str r1, [r0]

    ldr r0, =0x0209C004 //GDIR
    ldr r1, =0x00000008
    str r1, [r0]

    ldr r0, =0x0209C000 //DR
    ldr r1, =0x0
    str r1, [r0]

loop:
    b loop

